Jurassic 5 was an American alternative hip hop group formed in 1993 from members of two previous groups, Rebels of Rhythm and Unity Committee by rappers Charles Stewart (Chali 2na), Dante Givens (Akil), Courtenay Henderson (Zaakir), Marc Stuart (Mark 7even), and disc jockeys Mark Potsic (DJ Nu-Mark) and Lucas Macfadden (Cut Chemist). The group broke up in 2007.